Author's note: I've decided to write a bonus scene detailing what happened between the last two chapters and how the others conceived their revenge plan.

The nothingness around Meiling and Sakuya disappears as they once again become aware that they are outside the Scarlet Devil Mansion. It comes to their attention that they are both bare naked and they instinctively cover themselves. Sakuya is suddenly fully dressed and holds a change of clothes for Meiling in her outstretched hand.

"Put these on."

"Was that Lady Patchouli?" Meiling asks, unable to comprehend what just happened to them.

"Yes, and Koakuma."

Meiling finishes putting her clothes on. She covers her face in disgust. "aaagggggghhh!"

"What were they thinking?" Sakuya is unable to forget being violated by Patchouli and her familiar. "That couldn't have been them. They were ghosts, but why did they feel so real?"

"I sensed their qi. It was them, all right. How did they die?"

"And how did they become sex-crazed demons?"

Their thoughts continue to lead them in a circle...

Why did you do this? What came over you, Patchy? Remilia sits at the side of Flandre's bed, reflecting on what happened to them earlier that day. She remembers her sister calling for her to save her and being forced to savor the sensations that Koakuma was giving her, and Patchouli taking advantage of the situation to violate her. She remembers the feeling of being burned alive, bleeding all over her sister, losing control over her body,... and then everything disappearing around her.

Koakuma, you're disgusting. I hate you. Why...? Why did you do this to us? Flandre sits next to Remilia, unable to banish those thoughts from her memory. Koakuma made her body betray her mind. She had repeatedly told the succubus to get off of her, but her body morphed against her will and told the imp that she was ready for them to enter paradise. When her sister tried to save her, both of them had their souls torn apart, their hearts were crushed, and they were left soaked in each other's blood. How can we punish them for what they did to us?

"Strange, they're no longer dead." Meiling mutters to herself when she sees both Koakuma and Patchouli alive and well. That can't be right. Why did I sense their qi when we were being attacked? She watches Koakuma leave in some seemingly random direction.

I don't remember Lady Patchouli being sexually active. Sakuya remembers Patchouli having absolutely no sex life to speak of. What could have caused her to become some amorous spirit? Combing the shelves for the answer would take ages. Sakuya does not have the patience to read every single page in every single book in this library. To anyone else it would appear to have taken a few seconds, but to her, it would not be anything other than the most monotonous thing to do in Gensoukyou. She is not willing to trap herself in the same moment forever and resigns herself to doing the most inelegant thing she has done since she came to the mansion.

Meanwhile, Flandre and Remilia walk into the library just as Patchouli stands up and searches for another book to read. Remilia is careful not to make a sound as she is searching for the answers they seek. Flandre is eager to hunt down the succubus and kill her in the same way she was killed. I want her to know what it's like for her body to betray her.

"Erm..., Lady Patchouli, ... how did you become sexually active?" There is no way to phrase that question in a way that did not sound like Sakuya was probing the librarian.

"I'd... rather not talk about that."

"Well, we did... er... make love..." Why did I say it like that? "Outside the mansion... you and Koakuma... and I..."

"It's a secret, just pretend that I was always like this."

Sakuya looks for a way to continue the conversation...

Remilia has found nothing of value at Patchouli's desk. Nothing to show how she became a nymphomaniac. Well, time to look for Flandre. I wonder if she found Koakuma yet.

Meanwhile, Sakuya finds Flandre walking through the library. "Young Mistress?"

"Hello, Sakuya. Hello, Patchouli. Say, Patchouli, have you seen Koakuma?"

"She's off putting books back on the shelves."

"Thank you, Patchouli." Flandre walks past her and Sakuya and goes on with her search...

Meiling opens a book of spells. She cannot cast them, as the words that must be spoken are in languages that survive only in this book and others like it. Koakuma is returning books to their shelves and pays no mind to Meiling pulling one back out. She continues her current task until she hears Meiling say something she would rather not have heard.

"Hmm... Ljuba Jeseník..., Nothing is impossible with the blood of a succubus. Koakuma, do you know this..." Meiling turns her head to see that Koakuma has disappeared. "...Ljuba... Jeseník? ... Koakuma?" Meiling reads the pamphlet... which explains everything to her...

"Did you find anything, sister?"

"Nothing." Remilia sighs. "Have you found Koakuma yet?"

Flandre opens her mouth to say "no" but her search ends when she is about to answer. Rather than say anything, Flandre grabs the succubus. "Koakuma, what's wrong?"

"It's nothing."

"You looked like you were running away from something."

"It's nothing, Lady Flandre."

"It isn't nothing." Flandre keeps the succubus in her grip, and is about to drag her to paradise.

"Lady Flandre, please let go of..." A cold fluid pours down Koakuma's throat. Her eyes lock onto Remilia, holding the flask that is preventing the succubus from speaking. The flask pops out of her mouth and her eyelids begin to close against her will. "Lady Remilia... what is in that..." Koakuma falls limp in Flandre's arms.

"Thank you for that, sister." Both of them smile at one another. "I'll take her to the basement, tell the others to meet us there." Flandre kisses her sister.

"Don't tell Lady Patchouli." The sisters turn their heads to find Meiling. "I want to surprise her." Meiling hands Remilia a booklet that explains what happened to all of them. It explains how Patchouli became a sex-crazed lunatic. It explains why she and Koakuma appeared as ghosts to the others. It explains a plan for payback.

An evil smile forms on Flandre's face...

"Young Mistress, I believe everyone is here."

A ripping sounds fills the room. Three more people appear from out of nowhere, joining the four that are already there. A hot tongue slithers its way around Koakuma's breast.

"L... Lady Flandre? What are you doing...?" The sleeping potion wears off and the succubus is jolted awake by Flandre sucking on her nipple. The younger vampire looks up at the succubus, but says nothing.

Remilia watches the Demon of Love regain consciousness while she herself is pleasing one of Flandre's clones. The clone, like the real Flandre, is patient enough to go through the foreplay before sex. Her gaze returns to the clone, she closes her eyes and enjoys the spear in her mouth.

Another of Flandre's clones submits herself to Meiling, allowing herself to be penetrated by two fingers from each of the gatekeeper's hands. She is mesmerised by Meiling's arms pushing her breasts together.

Next to them, Sakuya and a third clone are eating each other alive. The maid pokes a finger inside the clone, kissing her clitoris while doing so. The clone wraps an arm around each of Sakuya's thighs and lashes her tongue along her wet lips.

Koakuma yelps as her vulva is forced against Flandre's vulva. The chains binding her to Flandre's bed jingle and clink, but do not release her. Her body wants more. It wants more! The younger sister shows an evil grin in response to the succubus thrusting her hips.

"No... Lady Flandre..., no more..." Koakuma sobs as her resistance begins to crumble. She tries to break the chains and fails again. Her movements become more frenzied as her body decides to release all of that pent up energy.

Only when Flandre notices the fountain of blood pouring from Koakuma's crotch does she separate herself from her.

"aahh! Lady Flandre, don't drink that!" Flandre does not listen. She swallows some of the succubus' release and lets the rest splash all over her, cupping some more succubus blood in her hands. Koakuma watches Flandre pour it into her mouth. The vampire kisses the succubus and spits the blood into her mouth. "mmmhh! mmh!" Her eyes shoot open and she accidentally swallows her own blood when she feels something impale her. She looks at Flandre once again, and admires the result of the vampire's transformation. The younger sister unsheathes herself and then skewers the succubus again. The look on Flandre's face tells Koakuma that they are both going to die.

"So, Koakuma, how does this feel?"

The succubus can sense the end nearing. She can't get enough of Flandre's Laevateinn. With tears clouding her vision, she begs for death. Her efforts to break free finally bear fruit and the chains fall apart. Her own screams are muffled by Flandre's lips as Laevateinn finally draws blood...

The vice around Sakuya's thighs tightens as the clone sprays her with white blood. The maid smiles while being soaked with the aphrodisiac. The tongue rolling around her clitoris causes Sakuya to lower her resistance and soak the clone's face with her own blood...

Another clone explodes into a white mess. Meiling presses her vulva against the clone's vulva before the clone evaporates into nothing.

The third and last clone grabs Remilia's hair and shoves a dagger as far down the elder sister's throat as possible in an attempt to fill her lungs. Remilia sucks the clone dry and the clone's form burns away...

Koakuma's womb is overfilled with vampire blood. She forces herself off of the real Flandre and her twitching lips spit the vampire's blood back at her, She screams as her own blood splashes everywhere. At the same time, Flandre also cannot stop bleeding. Her hand slides along her Laevateinn to keep the adrenaline flowing. But her efforts to keep herself alive are fruitless. The demon of love falls limp and her blood stops flowing. Mere moments later, Flandre's body gives out and returns to its normal form.

Meiling and Remilia stare in awe at the two corpses while Sakuya closes a teapot, filled with as much blood from the two devils as she could scrape from their bodies.

"No, not yet, Ljuba. Wait until we see Patchy." Flandre's disembodied soul appears to the others. "If you can't wait, I'll just kill you again." Koakuma concedes that there is nothing that she can do to prevent what will happen to Patchouli. Meiling takes the succubus' empty shell of a body into her arms. Remilia cradles her sister's corpse. She sees the grin on Flandre's face and can't help but mirror that look. I hope Patchy doesn't know. Eh, it doesn't really matter if she does, it won't change anything.